Itaparica Dam
E842835
Itaparica Dam is a large hydroelectric dam and reservoir complex on Brazil’s São Francisco River, primarily used for power generation and water regulation.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Itaparica Dam canonical | 1 |
| Itaparica Dam (downstream in cascade system) | 1 |
| Itaparica Reservoir | 1 |
| Luiz Gonzaga (Itaparica) Dam | 1 |
| Luiz Gonzaga Dam | 1 |
| Paulo Afonso Dam | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10071597 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Itaparica Dam Context triple: [São Francisco River, hasDam, Itaparica Dam]
-
A.
Santo Antônio Dam
Santo Antônio Dam is a large hydroelectric power plant in Brazil, built on the Madeira River near Porto Velho to generate electricity as part of the Madeira River energy complex.
-
B.
Sobradinho Dam
Sobradinho Dam is a large hydroelectric and flood-control dam on Brazil’s São Francisco River, notable for creating one of the world’s largest artificial reservoirs.
-
C.
São Simão Dam
São Simão Dam is a large hydroelectric power facility in Brazil known for generating electricity and forming the São Simão Reservoir on the Paranaíba River.
-
D.
Três Marias Dam
Três Marias Dam is a large hydroelectric and flood-control dam in Brazil that forms one of the country’s major reservoirs on the São Francisco River.
-
E.
Gouvães Dam
Gouvães Dam is a hydroelectric dam in northern Portugal that forms part of the Tâmega River energy complex, contributing to regional power generation and water management.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Itaparica Dam Target entity description: Itaparica Dam is a large hydroelectric dam and reservoir complex on Brazil’s São Francisco River, primarily used for power generation and water regulation.
-
A.
Santo Antônio Dam
Santo Antônio Dam is a large hydroelectric power plant in Brazil, built on the Madeira River near Porto Velho to generate electricity as part of the Madeira River energy complex.
-
B.
Sobradinho Dam
Sobradinho Dam is a large hydroelectric and flood-control dam on Brazil’s São Francisco River, notable for creating one of the world’s largest artificial reservoirs.
-
C.
São Simão Dam
São Simão Dam is a large hydroelectric power facility in Brazil known for generating electricity and forming the São Simão Reservoir on the Paranaíba River.
-
D.
Três Marias Dam
Três Marias Dam is a large hydroelectric and flood-control dam in Brazil that forms one of the country’s major reservoirs on the São Francisco River.
-
E.
Gouvães Dam
Gouvães Dam is a hydroelectric dam in northern Portugal that forms part of the Tâmega River energy complex, contributing to regional power generation and water management.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
hydroelectric dam ⓘ reservoir ⓘ |
| alsoKnownAs |
Luiz Gonzaga Dam
ⓘ
linked to:
Itaparica Dam
|
| basinCountry | Brazil ⓘ |
| commissioningDate | 1988 ⓘ |
| constructionBegan | 1979 ⓘ |
| country | Brazil ⓘ |
| crosses | São Francisco River ⓘ |
| energySource | hydropower ⓘ |
| impact |
displacement of local communities
ⓘ
modification of São Francisco River flow regime ⓘ |
| installedCapacity | 1480 MW ⓘ |
| locatedInRegion | Northeast Region of Brazil ⓘ |
| locatedInState |
Bahia
ⓘ
Pernambuco ⓘ |
| locatedNearCity |
Glória
ⓘ
Petrolândia ⓘ |
| locatedOnRiver | São Francisco River ⓘ |
| numberOfTurbines | 6 ⓘ |
| openingDate | 1988 ⓘ |
| operator |
CHESF
ⓘ
linked to:
Chesf
|
| owner |
CHESF
ⓘ
linked to:
Chesf
|
| partOf |
São Francisco River hydroelectric cascade
ⓘ
linked to:
São Francisco River hydropower system
|
| purpose |
hydroelectric power generation
ⓘ
river flow regulation ⓘ water storage ⓘ |
| reservoirName |
Itaparica Reservoir
ⓘ
linked to:
Itaparica Dam
|
| reservoirType | artificial lake ⓘ |
| turbineType | Francis turbine ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Itaparica Dam Description of subject: Itaparica Dam is a large hydroelectric dam and reservoir complex on Brazil’s São Francisco River, primarily used for power generation and water regulation.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Itaparica Dam
linked to: Itaparica Dam
linked to: Itaparica Dam
linked to: Itaparica Dam
linked to: Itaparica Dam